1. O. Hyvärinen, M. Hämäläinen and R. Leimala, “Outokumpu HydroCopperTM Process A Novel Concept in Copper Production”, in Chloride Metallurgy 2002, 32nd Annual Hydrometallurgy Meeting. 2002, Montreal, Quebec, Canada: MetSoc, pp. 609–612.
2. Synergistic effect of cupric and ferrous ions on active-passive behavior in anodic dissolution of chalcopyrite in sulfuric acid solutions
3. Chalcopyrite concentrate leaching with biologically produced ferric sulphate
4. Leaching of chalcopyrite in cupric chloride solution
5. D. M. Muir, “Basic Principles of Chloride Hydrometallurgy”, in Chloride Metallurgy 2002, 32nd Annual Hydrometallurgy Meeting, 2002, Montreal, Quebec, Canada: MetSoc, pp. 759–778.